First of all, I'd like to say that Evan is a great guy who's truly interested in talking to his guests and helping them out with anything. He's also got great tips.
However, we were not satisfied with the accommodation as we expected a view and to live with locals and get some insider info. The best view you get here is of the balcony across from yours. The terrace is big but not done up nicely so only usable for smokers as there aren't even chairs to sit on. Basically, this is a cheap guesthouse, not a homestay.
Our bathroom was terrible but there is a great bathroom with a hot shower on the first floor. You just have to know about it.
The pictures are accurate but the bed is quite uncomfortable (I don't like hard beds, but my boyfriend like it so it depends on you I guess). The Aircon worked fine and the size of the room is really good.
However, I would suggest for you to book a different room in Evan's guesthouse. We got a sneak peak into some of the other rooms and they were a bit smaller but a lot nicer. As you can't really use the balcony anyway, I'd recommend you take one of these. The location is super central if you want to be away from all the parties but still in the main area and it is extremely quiet which I appreciated particularly in Bangkok.